George g



`'.IO ALL WHOM IT MAY CONCERN:

substantially as and forthe purposo specified.

nitrn tetra strat @fitta- GEORGE' e. L YMAN, OE INDEPENDENCE, IOWA, AssIeNOE 'ro HIMSELE AND GEORGE P. ALADD, OE MILWAUKEE, WISCONSIN.

Letters .Patent No. 77,058, dated April 2l, 1868.

IMPROVEMENT IN HARVESTERS.

Be it known that I, 'GEORGE G. LEMAN, of Independence, in the eountyof Buchanan, and State ot Iowa, have invented a new and improved Sickle-Driving Mechanism for Mowers and Reaper-s; and I dohereby declare4 that the following is Aa full, clear, and exact description thereof', which will enable those skilled in the art to make and use the same, reference being had to the accompanying drawings, forming part of this specification, in which- Figure 1 is a top view of my invention, with the sickle-driving vapparat-.us thrown out of gear.

Figure 2, asimilar view, with the sickle-driving apparatus in gear, partly in seetion,taken in the line y y, fg- 3 Figure 3, a side view, partly in vertical section,in the line z iig. 2.

Similar letters of lreference indicate corresponding parts.

This invention relates to an improved mechanism for driving the sickles of reaping and'rnowing-machines and Indian-corn harvesters, and consists in a broad wheel or roller, on each side of which is a series of earns,.- arranged concentrically, which operate successively in the revolution o t' the roller upon the ends of lev`ers hy4 causing them to vibrate rapidly, and thus give the necessary'transverse motion to sickles attached in fro'nt'of the carriage, adapted to reaping, mowing, or cutting Indian corn, as desiied, and hereinafter described.

A isa broad drivingfwhcel, mounted on a carriage, B.

On each side of the driving-wheel A is a series of roller-earns, a a, set radially on their axes, within concentric ilanges, b 6,0m the sides of the wheel, over which the main fiange or tread of the wheel projects.

The roller-cams a a are placed on the opposite sides of the wheel A, in the same circle, and at tfhe same distance apart, but with their axes in alternating radial lines, or opposite the centres of the spaces between them respectively, to give alternate vibratory motion to levers or clicks c c, which are pivoted on the bottom ot' the carriage B, on eachside et` the driving-wheel A. A

The levers c c have pointedA cam-heads, d d; which are operated on by the cam-rollers a a, to give the levers vihratory motion for working the s ickles. I

The levers extend forward to the; front-platform end of the carriage, and in their ends are attahed links or sickle-bars e e, which project at right angles in opposite directions,passi'ng loosely through cachside of the carriage-frame, and having knuckles en their ends for connecting with sickles, as required.

The vibratingdevcrs c c are thrown in and out of gear with the driving-wheel cams a [thy meansof a link, g, pivoted at one end to the end ofone of thelcvers, and connected with a looped slide, L, i-n such manner, that, by moving the slide forward with a lever-attachment, c, the link g disengagcs the, levers e c, and by moving the slide t backward, the levers c e become engaged, as shown' in the two positions, figs. l and 2.

When the link g engages the front ends of the levers e c, they bear upon and act and react on each other alternately, in pushing the heads cl d in and out against the canrrollers a a, and thus receive a rapid vibratory motion from the driving-wheel as it moves forward in the tield.`

Sickles for mowing, reaping, or cutting Indian corn are attached'to the knuckleson the outer ends of the sieklc-bars e e, on Veither side, as may be desired. i

For regulating the distance of the sickles from the ground, the front end oi' the carriage is depressed or elevated more or less, by means of an adjustable roller oi' caster, fm, set-umlernenth the platform, and operated by a screw, n, to which it is attached.

Having described my invention, I claim as new, -and desire-to secure by Letters Pat'entc 1. The combination of the driving-wheel A, friction-rollers a, in the rim b of said wheel, \\ibra tinglevers` e, sickle-bar e, and link g, as herein described, for the pnrposespeeied.

2. The. vibrating-levers c c, in combination with the sickle-bars e e, and the link g, arranged and operating GEORGE, e. LEMAN. Witnesses:

J. H. HAUSER, S. P. MeEWEN. 

